Well there's the placebo effect and attribution effect right there already but if we ignore them you may have abdominal migraine (not all migraines cause headaches) which may be influenced by ph and electrolyte inbalance-where the acid (from the lemon) and salt come into play.

Could be the prescription medicines are making you nauseous and destroying the beneficial bacteria in your system giving you your abdominal pains. Maybe. Why don't you consult a holistic MD? These doctors shy away from big Pharma and concentrate on finding the real cause. They will use x-rays and thorough examination when indicated and will proceed with natural remedies first which have no side effects and which are more effective in bringing you into optimum health. Find a really good holistic doctor.

I can not imagine eating a fresh lemon salted? Please see your Doctor or a new Doctor.

It could be something simple, easily cured with eating fresh, raw food, but it could also be symptom of something far more dangerous, like cancer.

Please consult with gastroenterologist. Asking people here could lead you down a rabbit hole.

You might consider screening local chiropractors to learn which, if any, use applied kinesiology as a diagnostic modality. It can be particularly effective if your problem is related to hiatal hernia/ acid reflux etc. If you have a friend nearby, get them to apply some squeeze/pinch type type pressure to the fleshy area adjacent to the thumb base, between the thumb base and the metacarpal beneath your forefinger on your right hand
. If it is sensitive/painful, your problem likely is related.

Saddly, it could be a bunch of things. Also, it is not unusual that an abdominal ailment gives very confusing symptoms that may cause a misdiagnosis. My recent gallbladder had me convinced that I had major heart problems (shortness of breath, palpations, arhythmia, light headedness, dizzy spells, nausea) and about to die at any moment. A sonogram showed I had "sludge" in my gallbladder. This indirectly caused acid reflux which inflamed my stomach sphincters, the upper one caused pressure on my Vagus Nerve, which caused my bizarre symptoms. I felt no pain from acid reflux, and only pressure from the gallbladder. I suggest going to a real Doctor.

Maybe because it is alkaline and not acidic. Not medical practitioner, but most people get too much acidic foods. Just a thought